Please help me for change data of var element with JavaScript. I can't. I need If check.innerText changed to need change phone number.

function call(){

    var check = document.getElementById("locinfo").innerText;

    var tellnum = "tel:+998951441000";

    if (check=="Катартал") {
        tellnum = "tel:+998998047911";
    }
    else if (check=="Куйлик") {
        tellnum = "tel:+998951440010";
    }    }


    window.location.href = tellnum;
}